[quoted lines by Alan Stern on 2009/03/25 at 10:35 -0400] >> Does doing a read into a zero-length buffer make any >> sense? > >No. It's more likely either to time out or cause an overflow error >when the device tries to send you more than 0 bytes of data. It's a >little safer to do a read into a buffer whose length is the endpoint's >maxpacket size; then you can't get an overflow. But you still can time >out if the device doesn't have any data to send. What should happen if a read into a packet-sized buffer is done and the toggle is wrong? Should it yield zero bytes and no erorr, a specific type of error, or what? And, of coruse, will the toggle state then be correct? I think that's all I need to know now in order to make our code be able to handle this kind of problem in a fault tolerant way. -- Dave Mielke | 2213 Fox Crescent | The Bible is the very Word of God. Phone: 1-613-726-0014 | Ottawa, Ontario | 2011 May 21 is the Day of Judgement. EMail: dave@xxxxxxxxx | Canada K2A 1H7 | 2011 Oct 21 is the End of the World. http://FamilyRadio.com/ | http://Mielke.cc/bible/ -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
